JP3119987B2 - Tank lorry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank lorry. That is, the present invention relates to a tank lorry in which volatile liquids such as gasoline, light oil, and kerosene are loaded and transported in a tank.

[0002]

2. Description of the Related Art In a tank lorry of this type, when a volatile liquid is loaded into a vehicle-mounted tank from a storage tank on the loading facility side, gaseous vapor is generated from the liquid in the vehicle-mounted tank. Further, when a volatile liquid loaded in a tank mounted on a vehicle is unloaded to an underground tank or the like of an unloading facility, gaseous vapor is similarly generated from the liquid in the underground tank or the like. The gaseous vapor generated from such volatile liquids has the danger of explosion and is harmful and may cause pollution, so it is necessary to collect them without being released to the outside and being released to the atmosphere. There is. Therefore, conventionally, in this type of tank lorry,
A steam recovery device for recovering such gaseous steam is additionally provided. In conventional tank trucks, this steam recovery device allows gaseous vapor generated in the tank mounted on the vehicle to be recovered at the storage tank side of the loading equipment during loading, and also in the underground tank of the unloading equipment when unloading. The gaseous vapor generated in the tank was collected in the tank on the vehicle.

FIG. 3 shows a conventional example of such a tank lorry, wherein FIG. 1 (1) is a plan view and FIG. 3 (2) is a front sectional view. In the tank truck of FIG. 3, the steam recovery device 2 attached to the tank 1 connects a recovery hose (see FIG. 3) to a recovery port of a storage tank on the loading facility side and a recovery port of an underground tank on the unloading facility side. (Not shown), a collecting pipe 5 in which a steam passage 4 is formed and disposed in the tank 1 in the longitudinal direction and the adapter 3 is connected at one end, and a collecting pipe 5. Each branch,
Each branch pipe 9 was connected to each tank chamber 8 of the tank 1 via a pipe joint 6 and a recovery valve 7. In addition, 1 in the figure
Reference numeral 0 denotes a protective frame surrounding the tank 1, and the steam recovery device 2 is also surrounded by such a protective frame 10. In the figure, 11 is a manhole, 12 is an inlet, 13 is a bottom valve handle, and 14 is a safety valve.

FIG. 4 shows another conventional example of such a tank lorry, wherein FIG. 1A is a plan view and FIG. 4B is a front sectional view. In the steam recovery device 15 of the tank truck of FIG. 4, a steam passage 16 is formed inside the protective frame 10 instead of the steam passage 4 formed in the collecting pipe 5 of the steam recovery device 2 of FIG. . That is, the steam passage 16
Used the internal space formed by the top part 17, the outer part 18, the inner part 19, etc. of the protective frame 10 as a passage through which gaseous vapor for recovery flows. In this steam recovery device 15, the adapter 3, the pipe joint 6, the recovery valve 7, the branch pipe 9 and the like are the same as those described above for the steam recovery device 2 in FIG. The same applies to the valve handle 13, the safety valve 14, and the like.

[0005]

The following problems have been pointed out in such a conventional example. First, in the above-described steam recovery apparatus 2 shown in FIG. 3, the landing 20 surrounded by the protective frame 10 on the tank 1, that is, the recovery valve 7, the manhole 11, the inlet 12, the bottom valve handle 1
In a landing 20 where operations such as 3 and other operations are performed, a collecting pipe 5 as a steam passage 4 is independently provided in a longitudinal direction. Therefore, even the narrow landing 20 becomes narrower and more difficult to work, and the work is difficult to work at the landing 20 which is difficult to walk.

Second, in the above-described steam recovery apparatus 2 shown in FIG.
Are provided independently in the longitudinal direction, so that a problem has been pointed out in terms of cost, such as an increase in material cost, an increase in the number of mounting steps and an increase in mounting cost.

Third, the above-described steam recovery device 15 shown in FIG.
It was pointed out that the top 17 and the outer portion 18 of the protective frame 10 were liable to be damaged or broken when an accident in which the tank lorry fell over occurred. In other words, in the steam recovery device 15, the internal space formed in the top portion 17 and the outer portion 18 of the protective frame 10 is the steam passage 16 through which gaseous steam flows. This is extremely dangerous, and in particular, there is a risk of explosion of gaseous vapor remaining in the vapor passage 16 at the time of a fall accident, which has been a problem.

In view of such circumstances, the present invention has been made to solve the above-described problems of the conventional example. In the first aspect, the steam passage of the steam recovery device is provided inside the protective frame. According to the second aspect, the steam passage of the steam recovery device is formed integrally with the passage frame outside the inner side of the protective frame by being formed by forming a partition with a shielding plate near the part. Thereby, firstly, workability and safety on the tank are improved, secondly, cost is excellent, and thirdly, the danger of explosion of gaseous vapor at the time of a fall accident is avoided.
The purpose is to propose a tank truck.

[0009]

The technical means of the present invention for achieving this object is as follows. First, claim 1 is as follows. That is, this tank truck
A tank lorry for loading and transporting a volatile liquid in a tank, on which a protective frame is provided and a vapor recovery device is provided for recovering gaseous vapor generated from the liquid. Have been. The steam recovery device includes an adapter connected to the recovery hose, a steam passage provided on the protective frame and connected to the adapter, and one end connected to the steam passage and the other end connected to the recovery valve. And a connection pipe connected to the tank. The steam passage is formed by partitioning the inside of the protective frame with a shielding plate, and is provided near the inner portion while leaving a space between the top and the outer portion of the protective frame.

Next, claim 2 is as follows. That is, in this tank lorry, the steam passage of the steam recovery device is formed by partitioning the inside of the protective frame with a shielding plate as described in claim 1, and there is a space between the top and the outside of the protective frame. Instead of being provided near the inner portion, the protective frame is formed by a passage frame integrally provided outside the inner portion except for the top portion of the protective frame.

[0011]

The present invention comprises the above-mentioned means, and operates as follows. When a volatile liquid is loaded into a tank truck, gaseous vapor is generated in the tank,
Further, when the volatile liquid in the tank is unloaded to the unloading facility, gaseous vapor is generated in the unloading facility. Therefore, a steam recovery device is provided on the tank, and the generated gaseous steam is recovered from the tank to the loading facility through the recovery hose, adapter, steam passage, connection pipe, recovery valve, and the like. It is collected from the unloading facility to the tank. By the way, the steam passage of the steam recovery device according to the first aspect is defined by a shielding plate near the inner side inside the protection frame, and the steam passage of the steam recovery device according to the second aspect is formed inside the protection frame. It is integrally formed outside with a passage frame.

Therefore, first, the steam passage of the steam recovery device is not provided independently in a landing surrounded by a protective frame on the tank where various operations are performed.
It is formed with a protective frame. The landing can be used widely and does not disturb the work at the landing. Secondly, the shielding plate and the passage frame forming the steam passage of the steam recovery device can be integrally formed in advance with a protective frame by a mold.
It is possible to reduce material costs and installation man-hours. Third
In the event of a tank lorry falling accident, the top and outer parts of the protective frame are easily damaged and broken, but unlike these, they are located inside and are separated from these by the inner part of the protective frame. , Shielding plates, passage frames, etc. are not easily damaged or broken.
Thus, the steam passage and the steam recovery device are highly safe.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 shows a first embodiment of the present invention, in which (1) is a plan view and (2) is a front sectional view. FIG. 2A is an enlarged front sectional view of a main part of the first embodiment, and FIG. 2B is a front sectional view of a main part of the second embodiment.
FIG. 3 is a front sectional view of a main part of the third embodiment. FIG. 5 is an explanatory rear view showing a state of unloading from the tank lorry.

The tank lorry carries a volatile liquid A (see FIG. 5) loaded in the tank 1. The tank 1 shown in FIG.
The chamber is divided into about seven chambers (three in the illustrated example) from the chamber. Then, gasoline, light oil, kerosene, and other volatile liquids A are loaded from the storage tank (not shown) of the loading facility into each tank chamber 8 through, for example, an inlet 12 provided on each tank chamber 8. Rarely, they are loaded and transported to the destination unloading facility. For example, as shown in FIG. 5, the underground tank 22 of the unloading equipment such as a gas station is used.
Is unloaded. In the example of FIG. 5, a bottom valve (not shown) of each tank chamber 8 on the tank lorry side, a discharge pipe 23, a discharge port 24, and an unloading hose 25 below the tank 1 are provided.
The volatile liquid A loaded in each tank room 8 is unloaded to the underground tank 22 via the underground pipe 26 on the underground tank 22 side and the like. The bottom valve of each tank chamber 8 is
Each bottom valve handle 13 (see FIG. 1 (1)) provided on the tank 1 is operated to open and close.
Numeral 5 is interposed and connected between the discharge port 24 on the tank truck side and the underground pipe 26 on the underground tank 22 for unloading. Further, the manhole 11 shown in FIG.
Is used for maintenance and the like in each tank chamber 8 of the tank 1, and the safety valve 14 is used for adjusting the pressure in each tank chamber 8.

As shown in FIGS. 1 and 2, a protective frame 10 is provided on the tank 1 and the inside surrounded by the protective frame 10 becomes a landing 20 for various works. ing. That is, the protective frame 10 on the tank 1 is entirely erected on the tank 1 in accordance with laws and regulations in order to prevent, for example, scattering or outflow accidents when the volatile liquid A as a dangerous substance is loaded. , Is installed around. And the protective frame 10
A manhole 11, an inlet 12, provided on the tank 1;
It is obligatory that the bottom valve handle 13, the safety valve 14, and the steam recovery device 27, which will be described below, and other attached devices be provided at least 50 mm higher.

The protective frame 10 has an inner space, and has a projecting shape having a substantially A-shaped cross section, the inner space being formed smaller at the upper part and smaller at the lower part. And so on. That is, the protective frame 10 includes an upper portion 17 having a generally inverted C-shape with a protruding upper portion, an outer portion 18 as an outer wall integrally connected below the outer portion of the top portion 17 and having an upper portion gradually inclined inward, and an inner side of the top portion 17. And an inner portion 19 which is an inner wall which is integrally connected below and whose upper portion is gradually inclined outward. The lower ends of the outer portion 18 and the inner portion 19 are fixed to the tank 1 by welding or the like, respectively.
9 and the like are integrally formed by bending a plate body with a mold. In the figure, reference numeral 28 denotes a mounting plate.
The lower part of the outer part 18 and the lower part of the inner part 19 are horizontally interposed and fixed, and partition the inner space of the protective frame 10 up and down.

As shown in FIGS. 1 and 2, a steam recovery device 27 is provided on the tank 1 in this tank lorry. The steam recovery device 27 has an adapter 31 connected to the recovery port 29 via a recovery hose 30 (see FIG. 5), a steam passage 32 provided in the protective frame 10 and connected to the adapter 31, and one end thereof. Steam passage 3
2 and the other end is connected to the tank 1 via the collection valve 33.
Each branch pipe 3 as a connection pipe connected to each tank chamber 8
And 4.

More specifically, the adapter 31 is provided at the rear of the tank 1 and is provided with a valve. The adapter 31 is provided at a collection port (not shown) provided at the upper part of the storage tank of the loading facility. As shown in FIG. 5, it can be connected to a collection port 29 provided above the underground tank 22 of the unloading equipment such as a gas station via a provided collection hose 30. In the example of FIG. 5, the collection port 30 can be connected to the collection port 29 via the collection pipe 35 and the collection hose 30. Next, the steam passage 32 is provided in the protective frame 10 as described later, and the rear end thereof is connected to such an adapter 31 via an intervening pipe 36 and is disposed on the tank 1 in the longitudinal direction. . The connection pipe is composed of a plurality of branch pipes 34 in the illustrated example. Each of the branch pipes 34 has one end connected to the middle or the front end of the steam passage 32 and the recovery valve 33 serving as a vapor return valve and the pipe joint 3.
7 are connected to the upper part of each tank chamber 8 of the tank 1.

In the first embodiment shown in FIGS. 1 (1), (2) and (1) of FIG. The inside of the protection frame 10 on one side of the protection frame 10 is defined by a shielding plate 38, and the top 17 and the outer portion 18 of the protection frame 10 are provided near the inner portion 19 while leaving a space 39. I have. That is, in the first embodiment, the shielding plate 38 is a vertical plate 40 whose lower end is fixed on the above-mentioned horizontal intermediary plate 28.
And a horizontal plate 41 bent from the upper end of the vertical plate 40 toward the inner portion 19.
It is fixed to the inner surface. The shield plate 38 divides the inner space of the protective frame 10 into a steam passage 32 near the inner portion 19 and a space 39 near the top portion 17 and the outer portion 18. 38, the inner surface of the inner portion 19 of the protective frame 10, and the upper surface of the interposer 28.

The vertical plate 40 of the shielding plate 38 is almost vertically inclined in the example of FIG. 1 (2) and gradually inward in the example of FIG. 2 (1). These are freely selected in design. Further, in the shielding plate 38 of the second embodiment shown in FIG. 2 (2), the horizontal plate 41 further includes an outer portion 18 of the protective frame 10.
And its end is fixed to the outer part 18. Thus, in the second embodiment, the space 39 is vertically divided by the extended shielding plate 38 into a space on the top 17 side and a space on the outside 18 side.

Next, a third embodiment shown in FIG. 2C will be described. In the third embodiment, the steam passage 32 of the steam recovery device 27 is provided outside the protection frame 10 instead of inside the protection frame 10 as in the above-described first and second embodiments. That is, in the third embodiment, the steam passage 32 is formed by a passage frame 42 integrally provided outside the inner portion 19 except for the top portion 17 of the protective frame 10. It is bent in a substantially U-shape, and both ends are fixed above and below the outer surface of the inner portion 19, respectively. That is, the steam passage 32 is surrounded by the passage frame 42 and the outer surface of the inner portion 19 of the protection frame 10.

The present invention is configured as described above.
Then, it becomes as follows. In this tank lorry, the volatile liquid A is loaded and transported in each tank chamber 8 of the tank 1 mounted on the vehicle. When the volatile liquid A is loaded from the storage tank of the loading equipment into each tank chamber 8 of the tank 1 mounted on the vehicle, the volatile liquid A loaded in each tank chamber 8 of the tank 1 is loaded. A gaseous vapor B is generated from the liquid A. When unloading the volatile liquid A loaded in each tank chamber 8 of the tank 1 mounted on the vehicle to the underground tank 22 or the like of unloading equipment such as a gas station, the underground tank 22 or the like is used. Thus, gaseous vapor B is generated from the unloaded volatile liquid A (see FIG. 5). Therefore, a steam recovery device 27 is provided on the tank 1, and the recovery hose 30, the adapter 31, the steam passage 32, the branch pipes 34 as connection pipes,
The gaseous vapor B generated from the volatile liquid A as described above is recovered while being pushed out by the volatile liquid A to be loaded or unloaded through the recovery valve 33 and the like in order or in reverse. That is, the gaseous vapor B is recovered from the inside of each tank room 8 of the on-vehicle tank 1 to the storage tank side of the loading facility via such a vapor recovery device 27, and the basement of the unloading facility such as a gas station. From inside the tank 22 or the like, it is collected in each tank room 8 side of the tank 1 mounted on the vehicle.

For example, in the example of FIG. 5, the volatile liquid A is transferred from the tank chamber 8 of the tank 1 to the underground tank 22 via a bottom valve, a discharge pipe 23, a discharge port 24, an unloading hose 25, an underground pipe 26, and the like. To be unloaded. At the same time, underground tank 2
2, gaseous vapor B is generated from the volatile liquid A unloaded as described above.
Is an underground tank 2 with volatile liquid A that is sequentially unloaded.
2 and flows into the steam recovery device 27 on the tank 1 side through the recovery port 29, the recovery pipe 35, the recovery hose 30, and the like. Then, the adapter 31 of the steam recovery device 27,
Steam passage 32, branch pipes 34, pipe joints 37, recovery valve 33
And the like, is collected into the tank chamber 8 of the tank 1. The gaseous vapor B generated from the volatile liquid A has the danger of explosion and is harmful and may cause pollution. In this way, it is ensured that it is not released to the outside and dissipated to the atmosphere. Collected.

In the steam recovery device 27, the steam passage 27 is as follows. That is, the first (1) and (2) of FIG. 1 and the first (1) and (2) of FIG.
In the embodiment and the second embodiment, the steam passage 32 is defined by a shielding plate 38 near the inner portion 19 inside the protection frame 10, and a space 39 is formed between the top portion 17 and the outer portion 18 of the protection frame 10. doing. Further, in the third embodiment shown in FIG. 2 (3), the steam passage 32 is provided in the inner portion 19 of the protective frame 10.
Is formed integrally with a passage frame 42 outside the protection frame 10.
Are separated from the top part 17 and the outer part 18 of the base. Therefore, the following first, second, and third operations are performed in the tank truck steam recovery device 27.

First, the landing 20 surrounded by the protective frame 10 on the tank 1, that is, the recovery valve 33, the manhole 11,
In the landing 20 where the operation of the inlet 12, the bottom valve handle 13, etc., and various other operations are performed, only the branch pipe 34 as the connection pipe is present. 2, the collecting pipes 5 forming the steam passages 4 are not independently provided in the longitudinal direction. That is, the steam passage 3 of the steam recovery device 27
2 is defined near the inner portion 19 inside the protection frame 10 or is integrally formed outside the inner portion 19 of the protection frame 10. Therefore, the landing 20 can be widely used, and does not hinder the operation at the landing 20.

Secondly, the shielding plate 38 and the passage frame 42 forming the steam passage 32 are provided on the top 1 of the protection frame 10.
7, together with the outer portion 18, the inner portion 19, the interposition plate 28, etc., can be integrally molded in advance using a mold. Therefore, it is possible to reduce the material cost and the number of mounting steps.

Third, when the tank lorry falls down, the top portion 17 and the outer portion 18 of the protective frame 10 are easily damaged or broken, but unlike the above, they are located inside and have a space 39 therebetween. The inner part 19 of the protective frame 10,
Damage or breakage of the shielding plate 38, the passage frame 42, etc.
Not at all. Therefore, the inner part 1 of such a protective frame 10
9, the vapor passage 32 formed by the shielding plate 38, the passage frame 42 and the like has a gaseous state in the space 39 on the side of the top portion 17 and the outside portion 18 as compared with the above-described conventional vapor passage 16 of FIG. No steam is flowing, and the safety is extremely high, so that the safety of the steam recovery device 27 is also improved.

[0028]

As described above, in the tank lorry according to the present invention, in the first aspect, the steam passage of the steam recovery device is formed by partitioning the inside of the protective frame toward the inner side with the shielding plate. According to the second aspect, the following effects are exhibited by forming the steam passage of the steam recovery device integrally with the passage frame outside the inner portion of the protection frame.

First, workability and safety on the tank are improved. That is, in a landing surrounded by a protective frame on the tank, that is, in a landing where various operations are performed, as in the conventional example of this type, a collecting pipe serving as a steam passage of a steam recovery device is provided independently in a longitudinal direction. Not necessarily.
Therefore, the landing can be used widely and the workability can be improved, and the safety can be improved without being hindrance to the work at the landing because it is easy to walk.

Second, it is excellent in cost. That is, the protective frame and the shield plate and the passage frame of the steam recovery device can be integrally formed in advance, and accordingly, the cost is excellent, for example, the material cost is reduced and the number of mounting steps is not required.

Thirdly, the danger of explosion of gaseous vapor at the time of a fall accident is also avoided. In other words, even if the top or the outer part of the protective frame is damaged or damaged when a tank lorry falls over, the safety of the steam passage of this steam recovery device is high, and in particular, the steam passage remains. The danger of explosive gaseous vapors is avoided. As described above, the effects exhibited by the present invention are remarkably large, for example, the problems existing in this type of conventional example are eliminated.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a tank lorry according to the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a front sectional view.

FIGS. 2A and 2B are front sectional enlarged views of main parts of the first embodiment, FIG. 2B is a front cross sectional view of main parts of the second embodiment, and FIG. It is a front sectional view of an important section.

FIGS. 3A and 3B show a conventional tank lorry of this kind, in which FIG. 1A is a plan view and FIG. 2B is a front sectional view.

FIG. 4 shows another conventional tank truck of this type,
FIG. 1A is a plan view, and FIG. 2B is a front sectional view.

FIG. 5 is an explanatory rear view showing a state of unloading from the tank lorry.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank 10 Protective frame 17 Top 18 Outer part 19 Inner part 27 Steam recovery device 30 Recovery hose 31 Adapter 32 Steam passage 33 Recovery valve 34 Branch piping (connection piping) 38 Shield plate 39 Space 42 Passage frame A liquid B vapor

Claims (2)

(57) [Claims] 1. A tank lorry for carrying a volatile liquid in a tank by loading the tank with a protective frame around the tank and collecting gaseous vapor generated from the liquid. A steam recovery device is provided, and the steam recovery device has an adapter connected to the recovery hose, a steam passage provided on the protective frame and connected to the adapter, and one end connected to the steam passage. And a connection pipe having the other end connected to the tank via a recovery valve. The steam passage is formed by partitioning the inside of the protective frame with a shielding plate, and a top portion of the protective frame. The tank lorry is characterized in that it is provided near the inner part while leaving a space with the outer part. 2. The tank truck according to claim 1, wherein the steam passage of the steam recovery device is formed by partitioning the inside of the protective frame with a shielding plate as in claim 1, and a top portion of the protective frame and The outer part is not provided near the inner part while leaving a space, but instead is formed by a passage frame integrally provided outside the inner part except the top part of the protective frame. , Characterized by a tank lorry.